package ooday03;

public class InterFaceDemo {
    public static void main(String[] args) {

    }



}






interface Inter{
     void show();
     void test();//默认public abstract
}
interface Inter2 extends Inter{
    void sing();
    void dance();
}
 abstract class AOO implements Inter,Inter2{
    public void dance() {

    }
    public void sing(){

    }
    public void show(){

    }
    public void test(){

    }
}
abstract  class boo {
    abstract void say();
}



























































